Fix: check that object.properties exists before testing its length

package.json

@@ -92,7 +92,7 @@
         "c9.ide.format": "#5ec97fb083",
         "c9.ide.help.support": "#932fbb3743",
         "c9.ide.imgeditor": "#612e75ef4f",
-        "c9.ide.immediate": "#0e0c18066c",
+        "c9.ide.immediate": "#76c8e3213a",
         "c9.ide.installer": "#b2e4ba0a92",
         "c9.ide.language.python": "#aff0772c78",
         "c9.ide.language.go": "#6ce1c7a7ef",